DE861905C - Process for the preparation of solutions of thiosemicarbazones - Google Patents

Process for the preparation of solutions of thiosemicarbazones

Info

Publication number
DE861905C
DE861905C DEP35246A DEP0035246A DE861905C DE 861905 C DE861905 C DE 861905C DE P35246 A DEP35246 A DE P35246A DE P0035246 A DEP0035246 A DE P0035246A DE 861905 C DE861905 C DE 861905C
Authority
DE
Germany
Prior art keywords
solutions
thiosemicarbazones
preparation
solvents
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEP35246A
Other languages
German (de)
Inventor
Robert Dr Behnisch
Fritz Dr-Ing Mietzsch
Hans Dr Dr Med H C Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Priority to DEP35246A priority Critical patent/DE861905C/en
Priority claimed from GB1150849A external-priority patent/GB681905A/en
Application granted granted Critical
Publication of DE861905C publication Critical patent/DE861905C/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/06Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/08Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
    • A61K47/10Alcohols; Phenols; Salts thereof, e.g. glycerol; Polyethylene glycols [PEG]; Poloxamers; PEG/POE alkyl ethers

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung von Lösungen von Thiosemicarbazonen Thiosemicarbazone finden therapeutische Verwendung vor allem gegen Tuberkulose. Für die praktische Anwendung wird es oft als störend empfunden, daß sie vielfach nur in wenigen Lösungsmitteln, besonders Säuren oder Alkalien, in Lösung zu bringen sind.Process for the preparation of solutions of thiosemicarbazones thiosemicarbazones are used primarily for therapeutic purposes against tuberculosis. For the practical Application, it is often felt to be annoying that it is often only in a few solvents, especially acids or alkalis, are to be brought into solution.

Es wurde nun gefunden, daß mit Wasser mischbare Lösungsmittel aus der Gruppe der Glykole bzw. ihrer Äther ausgezeichnete Lösungsmittel für derartige Thiosemicarbazone darstellen. Die Lösungen werden zweckmäßig in der Weise hergestellt, daß man zunächst die gewogene Menge der Substanz unter Erwärmen auflöst, dann abkühlt und mit dem Lösungsmittel auf das gewünschte Volumen auffüllt.It has now been found that water-miscible solvents the group of glycols or their ethers excellent solvents for such Represent thiosemicarbazones. The solutions are expediently prepared in such a way that that one first dissolves the weighed amount of the substance with heating, then cools it down and made up to the desired volume with the solvent.

In der Wärme, zum Teil auch noch bei Körpertemperatur, lassen sich zum Teil recht erheblich konzentrierte Lösungen der Thiosernicarbazone herstellen. Für bei gewöhnlicher Temperatur klar bleibende Lösungen können folgende Beispiele gegeben werden: 4-Acetylaminobenzalthioscinicarbazon .... A 4-Aminobenzalthiosemicarbazon ......... B 4-Propionylaminobenzalthioscmicarbazon. . C 4-Benzoylaminobenzalthiosemicarbazon ... D 4-Anisalthiosemicarbazon ................ E 4-AHyloxybenzalthiosemicarbazon ....... F 4-Aminobenzalthiosernicarbazon/Phosphorderivat .............................. G (hergestellt durch Einwirkung von Phosphoroxychlorid auf in Pyridin gelöstes 4-Arnülobenzalthiosemicarbazon und anschließende Behandlung mit Wasser).In the warmth, sometimes even at body temperature, sometimes very concentrated solutions of the thiosernicarbazones can be produced. The following examples can be given for solutions that remain clear at ordinary temperature: 4-acetylaminobenzalthioscinicarbazone .... A 4-aminobenzalthiosemicarbazone ......... B 4-propionylaminobenzalthioscinicarbazone. . C 4-Benzoylaminobenzalthiosemicarbazone ... D 4-Anisalthiosemicarbazone ................ E 4-AHyloxybenzalthiosemicarbazone ....... F 4-Aminobenzalthiosernicarbazone / phosphorus derivative ...... ........................ G (produced by the action of phosphorus oxychloride on 4-amulobenzalthiosemicarbazone dissolved in pyridine and subsequent treatment with water).

Anisal-4-aminobenzalthiosemicarbazon .... = H 4-Phenoxybenzalthiosemicarbazon ....... = j Die nachstehe, nde Tabelle,' in der die vorstehend auf7 geführten Thiosefnic#arbaioiie mit - Buchstaben eingesetzt sind, gibt die Prozentzahlen der ungefähren Löslichkeiten in den angegebenen Lösungsmitteln bei Zimmertemperatur an. 1 AI -B 1 C 1 D i E 1 F 1 G H j Äthyleiigtyköl 2 1 3 2 Propylenglykol .... 1 5 <3 <3 2 2 5 3 Glykohnonomethyl- äther ..... 3 5 5 5 5 3 Diglykohnono- methyläther .... 5 >io >IO >IO Diglykolinonoäthyl- äther .......... 3 >IO >io >iä i, 3-Butylenglykol , - 1 2 Beispi-el Zur Ausführung löst man z. B, i g A in einem Meßkolben in etwa 7o ccm i, 2-Propylenglykol-- dur - eh kurzes Erwärmen im Wasserbad auf, kühlt ab undfüllt mit Propylenglykol auf ioo ccm auf. . Statt der reinen Lösungsmittel können -auch Gemische ver--wendet werden. Für die Gemische können beispielsweise die- Säureamide herangezogen werden, die, wie gleichzeitig - gefunden, wurde, ebenfalls als Lösungsmittel für Thiosemicarbazone geeignet sind. Zum Beispiel lassen sich 3 Teile A in einem Gemisch aus 7o Teilen Diglykolmonoäthyläther und 3o Teilen Formamid zu einer bei gewöhnlicher Temperatur klar bleibenden Lösung auflösen. Zum Teil vertragen die Lösungen, besonders die verdünnteren, auch einen Zusatz von Wasser, wobei eine KristalEsation nicht oder erst nach längerer Zeit eintritt.Anisal-4-aminobenzalthiosemicarbazon .... = H 4-Phenoxybenzalthiosemicarbazon ....... = j The following table, in which the above-mentioned thiosefnic # arbaioiie with - letters are used, gives the percentages of the approximate Solubilities in the specified solvents at room temperature. 1 AI -B 1 C 1 D i E 1 F 1 G H j Ethylene glycol oil 2 1 3 2 Propylene glycol .... 1 5 <3 <3 2 2 5 3 Glycononomethyl ether ..... 3 5 5 5 5 3 Diglycone mono- methyl ether .... 5>io>IO> IO Diglycolinonoethyl äther .......... 3>IO>io> iä i, 3-butylene glycol , - 1 2 Example For execution one solves z. B, i g A in a volumetric flask in about 70 ccm of i, 2-propylene glycol - by - anyway briefly warming up in a water bath, cooling down and filling up to 100 ccm with propylene glycol. . Mixtures can also be used instead of pure solvents. For example, mixtures DIE acid amides can be used, which, at the same time - found was, are also suitable as solvents for thiosemicarbazones. For example, 3 parts of A can be dissolved in a mixture of 70 parts of diglycol monoethyl ether and 30 parts of formamide to give a solution which remains clear at ordinary temperature. In some cases, the solutions, especially the more dilute ones, tolerate the addition of water, whereby crystallization does not occur or only occurs after a long time.

Claims (1)

- PAT9NTANSPRUCII: Verfahren zur Herstellung von Lösungen von ,therapeutisch verwendbaren Thiosemicarbazonen, dadurch gekennzeichnet, daß als Lösungsmittel die mit- Wasser mischbaren organischen Lösungsmittel aus der Gruppe der Glykole bzw. ihrer Äther, ge--gebenenfalls unter Zusatz von Wasser, verwendet werden-. - PAT9NTANSPRUCII: Process for the preparation of solutions of therapeutically usable thiosemicarbazones, characterized in that the water-miscible organic solvents from the group of glycols or their ethers, optionally with the addition of water, are used as solvents.
DEP35246A 1949-02-27 1949-02-27 Process for the preparation of solutions of thiosemicarbazones Expired DE861905C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP35246A DE861905C (en) 1949-02-27 1949-02-27 Process for the preparation of solutions of thiosemicarbazones

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP35246A DE861905C (en) 1949-02-27 1949-02-27 Process for the preparation of solutions of thiosemicarbazones
GB1150849A GB681905A (en) 1949-04-29 1949-04-29 Solutions of thiosemicarbazones

Publications (1)

Publication Number Publication Date
DE861905C true DE861905C (en) 1953-01-08

Family

ID=25990345

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP35246A Expired DE861905C (en) 1949-02-27 1949-02-27 Process for the preparation of solutions of thiosemicarbazones

Country Status (1)

Country Link
DE (1) DE861905C (en)

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